Wire-cloth-stretching machine



Nov. 15, 1927. 1,649,350

W. P. JONES WIRE QLOTH STRETCHING MACHINE Filed April 22, 192.6

A W INVENTOR Patented Nov. 15, 1927.

UNITED STATES 1,649,350 PATENT OFFICE.

WILLIAM PETER JONES, or novna, NEW JERSEY.

WIRE-CLOTH-STRETCHING MACHINE.

Application filed April 22, 1926. Serial No. 103,997.

fabric wastage through tearing; second, to

reduce the shop space ordinarily required for Wire-cloth or fabricstretching andfastening operations; third, to provide facilities forstopping the wire-cloth or fabric stretching and fastening operationswithout necessitating a duplication of work already performed whenresuming the task; and, fourth, to save time and labor by reducing thenumber of hands required to perform wire-cloth stretching or fasteningoperations.

One'form of the invention is illustrated in the accompanying drawing, inwhich Fig. 1 is a plan view of the machine as it appears in actualoperation when loaded with a roll of wire-cloth; Fig. 2, a verticalsection of the machine from the side; and Fig. 3, a detailed, full-facedview of the machine from its front end.

The table or plate 1, represents the worktable or bench upon which thetwo adjustable, parallel basic uprights 2 2, are fastened, to anydesired width, by means of angle brackets, 21 21, and lag screws.-

The two eccentric cams, 6 6 are fastened to the top of table 1 butbeneath retainer 5 by means of rivets 7 7.

Between stationary retainer 5 and movable top clamp 3 is a thin openingboth edges of which are faced with strips of metallic packing, wireclamping, 23 and 24, or other suitable material to prevent tearing ofthe wire-cloth or fabric 16 as it comes through said opening off theroll 12, which is horizontally supported by cylindrical roller 13 andclamps 14 14; attached to angle brackets 15 15 which, in turn, arefastened to the rear edges of basic uprights 2 2.

Movable top clamp 3, which is operated by the two eccentric cams 8 8fastened in-- side the slot provided in the two basic uprights 2 2 bymeans of bolts 9 9, washers 1O 10 and nuts 11 11, is rendered adjustableby two spiral compression springs 20 20 inserted between the lowerextremities ofinovable top clamp 3 and the upper extremities ofstationary retainer5. Movable top clamp 3 is rendered proof againstslipping or sliding sideways by the two dowels 19 19" inserted throughtop clamp 3 3 at right angles thereto and parallel with and restingagainst theface of the inside'of the basic uprights22.

Adjustable brace 4, fastened to the front edges of basic uprights 2 2,renders th framework Inoresecure.

' Brackets and bearings 26 26 attached to side of work table or bench '1in conformity with width of adjustable, basic uprights 2 2,"

by means of parallel slots in work table, support roller-rod 27' beneathwhich wire-cloth or fabric 16 passes on its way to the further extremityof screen or other framework 17 the upper edge of which said frameworkis placed'snugly against the heads of eccentric cams 6 6 which, whenoperated by their handles, push screen or other framework 17 forward sothat wire-cloth or fabric 16, tacked or otherwise fastened to lower endof framework 17 by tacks 25, is stretched and flattened to any desireddegree between wirecloth or the fabric roll 12 and the lower end of theframework 17.

When the desired degree of tautness has been attained, the same may bemaintained by operating the eccentric cams 8 and 8 which exert pressureupon the movable top clamp 3, thus securing the wire-cloth or otherfabric between the stationary retainer 5 and the movable top clamp 3.

The work of completing the tacking, nailing, screwing, bolting,riveting, gluing or otherwise fastening of the wire-cloth or otherfabric to the framework may then be immediately finished or it may bediscontinued for the time being without the necessity of going over thestretching and fastening operations again, as would otherwise be thecase.

In stretching and fastening wire-cloth or other fabric over certainframes where the weight of the frame would be insuflicient to permit ofmuch stretching either because of the material of which made or becauseof the small size of the frame, it is advisable to fasten a protrudingclamp 18 to the lower end of the framework 17 which said clamp 18 worksin sliding, adjustable members or supports 22, 22, attached to the tableor bench 1 whereb stability of the framework is ensured if: stretchingand fastening purposes. i

While I have illustrated and described my invention with some degree ofparticularity,

L States Letters Patent is 1-. A stretching device for stretchingmaterial: across a frame. comprising" a base,

means= for-supporting the roll of material at one end of the base, aplurality of individual- Ly: operable ca-m members for moving the frame:to which the material is to be applied, guidesvon the base for saidframe, and: a

clamp: between the frame and the rollv for securely holding the materialto be stretched. 1 2: stretching, device for stretching mathe base formoving the frame to which the material is to be applied, guides on thebase for said frame adapted to prevent the raising of one end of theframe from the base and a clamp between the frame and the material rollsecurely holding the material to be stretched.

3. A stretching device. for stretching material across aframe,comprising a base, means for supporting a roll ofmaterial at one end ofthe base, a plurality of members pivoted tothe base for moving the frameto which the material isto be applied on the base for said. lframeresiliently opposed clamping membersv disposed between the frame and theroll and. a plurality of cam members for operating said clamp memberswhereby the material to be stretched will? be securely held.

WILLIAM PETER J ONE S;

